In Decibels: Use with caution, I reviewed the concept of decibels as a ratio of two powers (and sometimes voltages). Decibels are also used to indicate absolute power and voltage levels by specifying ...

Noise is everywhere. Though some noise can be very harmful, many noises are associated with something positive. For example, for many people the sound of birds chirping marks the arrival of spring, ...

Q. I’m worried about my hearing because I played in a rock band when I was a kid. How dangerous is the sound level on the bandstand? A: Sound volume is measured in decibels (dB). You risk hearing loss ...

Editor's Note: We have strived to maintain accessibility in our Bring Science Home activities by limiting the required technology. We recognize technology is now more widely available than it was when ...

One of the most difficult-to-understand terms for newcomers (and even experienced enthusiasts) in audio and sound reproduction is the decibel, partly because it’s a measure of relative intensity or ...

Before we jump into the hard data, here are some decibel level comparisons from the American Academy of Audiology: Moderate: 50 - 60 dB. Dishwashers and rainfall. Loud: 70 - 80 dB. Vacuums and alarm ...

Getting medical staff to adopt some simple measures on three hospital wards reduced noise levels by just under 20 percent -- from 96.48 decibels to 77.52 decibels. Hospitals can be very noisy places.

The Health and Safety Commission put together an Info sheet for understanding how sound works. I think it is very handy to know how dBs add up when you are trying to build a quite (quiter) ...